The old town hall of Bamberg was built in 1386 in the middle of the Regnitz River, accessible by two bridges. According to legend the bishop of Bamberg did not grant the citizens any land for the construction of a town hall. This prompted the townsfolk to ram stakes into the river Regnitz to create an artificial island, on which they built the town hall they so badly wanted.
The Old Town Hall's frescoes never fail to impress as they lend the facades a three-dimensional quality achieved with trompe d'oeil architecture. A special detail is a continual source of mirth among tourists: the leg of a cherub protudes out of the wall as a sculpture. Today the Old Town Hall accommodates the prestigious rococo hall and the Ludwig Collection.References:
The Petersberg Citadel is one of the largest extant early-modern citadels in Europe and covers the whole north-western part of the Erfurt city centre. It was built after 1665 on Petersberg hill and was in military use until 1963. It dates from a time when Erfurt was ruled by the Electors of Mainz and is a unique example of the European style of fortress construction. Beneath the citadel is an underground maze of passageways that can be visited on guided tours organised by Erfurt Tourist Office.
The citadel was originally built on the site of a medieval Benedictine Monastery and the earliest parts of the complex date from the 12th century. Erfurt has also been ruled by Sweden, Prussia, Napoleon, the German Empire, the Nazis, and post-World War II Soviet occupying forces, and it was part of the German Democratic Republic (East Germany). All of these regimes used Petersberg Citadel and had an influence on its development. The baroque fortress was in military use until 1963. Since German reunification in 1990, the citadel has undergone significant restoration and it is now open to the public as a historic site.